Masters of the Transistor Universe:
I am trying to design the amplifier pictured below (from our old friends Horowitz & Hill) so that I have a mid-band gain of 10V/V.
H&H give the gain = -Rc/Re=-10V/V, but I am wondering if this is the "true" expression for the gain and how this circuit should be realized in PSpice (will attach pictures tomorrow when I have access to Pspice)....I am figuring already that PSpice does not report a gain of 10 but rather around 10, perhaps 9.5 or something.
Can someone recommend a transistor for this model? I see that VB=1.6 makes my Q-point (Ic,Vce)=(1mA,9V) (I think for an assumed hfe=100), but I am not sure how to implement in Pspice (i.e do I have a "bare" npn transistor with only the parameter hfe=100 or do I use a complete model like the 2N2222?)
Many thanks for your help.
JT
I am trying to design the amplifier pictured below (from our old friends Horowitz & Hill) so that I have a mid-band gain of 10V/V.
H&H give the gain = -Rc/Re=-10V/V, but I am wondering if this is the "true" expression for the gain and how this circuit should be realized in PSpice (will attach pictures tomorrow when I have access to Pspice)....I am figuring already that PSpice does not report a gain of 10 but rather around 10, perhaps 9.5 or something.
Can someone recommend a transistor for this model? I see that VB=1.6 makes my Q-point (Ic,Vce)=(1mA,9V) (I think for an assumed hfe=100), but I am not sure how to implement in Pspice (i.e do I have a "bare" npn transistor with only the parameter hfe=100 or do I use a complete model like the 2N2222?)
Many thanks for your help.
JT
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